ATCs are good at muddy terrain with the right tires, because they are light and easy for the rider to throw around..also when they get stuck you can generally get them out yourself.
A Rubicon, weighing in almost double most trikes are not so easy to man handle alone..but with four driving wheels will have more pull than your trike.
Circumstances were with you this day..but the minute you get smug, you get stuck and you look like a dope asking somebody on a quad help you out.
Current toys..
1986 Honda 350X..trail bomb!
1985 Honda 250SX..my main mudder
1985 Honda 250ES..Back in Black Trike
Current non-trike toys:
1990 Honda TRX300FW
1995 Seadoo GTX
1998 Polaris Indy Lite 340(Nearly new looking)
1998 Polaris Touring 500
1998 Club Car (electric)